Bill Nighy had no idea that Davy Jones appeared in Pirates of the Caribbean: Dead Men Tell No Tales, but he would love to return for the sequel. The English actor made his debut as the infamous pirate in the franchise's second installment, Pirates of the Carribean: Dead Man's Chest, in which he played the main villain. Johnny Depp's Jack Sparrow had made a deal with the Flying Dutchman's captain to resurrect the Black Pearl from the ocean's depths. By the time Dead Man's Chest rolls around, it was time for Sparrow to repay his debt.
Of course, various things ensued, and the East India Trading Company, along with the British Royal Navy, ended up with Davy Jones' heart. In the series' third chapter, At World's End, Orlando Bloom's Will Turner was dying, so Sparrow helped him stab Jones' heart, thereby killing the infamous pirate while subsequently becoming the newest captain of the Flying Dutchman. That was the last time audiences saw Davy Jones until he showed up once again in the Dead Men Tell No Tales post-credits scene. The thing is, Nighy never knew that.
In an interview with Empire Magazine, Nighy said that he wasn't aware that his tentacled character, Davy Jones, had cameoed in the latest Pirates of the Caribbean film since he, presumably, hadn't seen it yet. It wasn't until his cab driver mentioned it that he was made aware of the cameo:
“I didn't know anything about it until about a week ago. The cab driver said, ‘Are you doing the next one?’ I said, ‘No. I didn't know there was a next one.’ He said, ‘Well, you were in the last one’. I said, ‘No I wasn't’. He said, ‘Yes, you were’. So that's all I know. You probably know more than I do.”
Since the character didn't have any dialogue and only appeared as a silhouette, thus implying his resurrection, it makes sense that Nighy wouldn't have known about the cameo. Still, it's surprising that Disney wouldn't at least discuss the possibility of Davy Jones' return with the actor before having him appear in the post-credits scene, since that implies his possible return in an eventual sequel, should the studio choose to move forward with another installment. Thankfully, if they do plan on bringing back the Dutchman's former captain, Nighy is all up for reprising his role: “I'd love to be in [another Pirates movie]. I'd be there like a shot. But I have not been approached.”
Currently, there are no immediate plans to develop another Pirates installment, but the last film's post-credits scene indicates that, should Pirates of the Caribbean 6 move forward, the original trio - Will Turner, Elizabeth Swann, and Captain Jack Sparrow - will return to defeat Davy Jones, who would presumably be back as the Flying Dutchman's captain once again. After all, the Dutchman always needs a captain.
Source: Empire Magazine